package com.zq.it.dao.impl.exam;

import java.util.List;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.zq.it.dao.exam.TQuestionDbDAO;
import com.zq.it.dao.impl.BaseDao;
import com.zq.it.pojo.exam.TQuestionDb;

/**
 * TQuestionDbDAO的实现类
 *
 * @author 王凡
 *
 * @version $ID: TQuestionDbDAOImpl.java 2013-3-21 王凡@$
 */

public class TQuestionDbDAOImpl extends BaseDao<TQuestionDb> implements TQuestionDbDAO {
	private static final Logger log = LoggerFactory
			.getLogger(TQuestionDbDAOImpl.class);
	// property constants
	public static final String DB_NAME = "dbName";
	public static final String EXTEND_FIELD = "extendField";

	@Override
	public void save(TQuestionDb transientInstance) {
		log.debug("saving TQuestionDb instance");
		try {
			getHibernateTemplate().save(transientInstance);
			log.debug("save successful");
		} catch (RuntimeException re) {
			log.error("save failed", re);
			throw re;
		}
	}

	@Override
	public void delete(TQuestionDb persistentInstance) {
		log.debug("deleting TQuestionDb instance");
		try {
			getHibernateTemplate().delete(persistentInstance);
			log.debug("delete successful");
		} catch (RuntimeException re) {
			log.error("delete failed", re);
			throw re;
		}
	}

	@Override
	public TQuestionDb findById(Long id) {
		log.debug("getting TQuestionDb instance with id: " + id);
		try {
			TQuestionDb instance = (TQuestionDb) getHibernateTemplate()
					.get("com.zq.it.pojo.exam.TQuestionDb", id);
			return instance;
		} catch (RuntimeException re) {
			log.error("get failed", re);
			throw re;
		}
	}

	@Override
	public List findByExample(TQuestionDb instance) {
		log.debug("finding TQuestionDb instance by example");
		try {
			List results = getHibernateTemplate().findByExample(instance);
			log.debug("find by example successful, result size: "
					+ results.size());
			return results;
		} catch (RuntimeException re) {
			log.error("find by example failed", re);
			throw re;
		}
	}

	@Override
	public List findByProperty(String propertyName, Object value) {
		log.debug("finding TQuestionDb instance with property: " + propertyName
				+ ", value: " + value);
		try {
			String queryString = "from TQuestionDb as model where model."
					+ propertyName + "= ?";
			return getHibernateTemplate().find(queryString, value);
		} catch (RuntimeException re) {
			log.error("find by property name failed", re);
			throw re;
		}
	}

	@Override
	public List findByDbName(Object dbName) {
		return findByProperty(DB_NAME, dbName);
	}

	@Override
	public List findByExtendField(Object extendField) {
		return findByProperty(EXTEND_FIELD, extendField);
	}

	@Override
	public List findAll() {
		log.debug("finding all TQuestionDb instances");
		try {
			String queryString = "from TQuestionDb";
			return getHibernateTemplate().find(queryString);
		} catch (RuntimeException re) {
			log.error("find all failed", re);
			throw re;
		}
	}

	@Override
	public void update(TQuestionDb instance) {
		log.debug("attaching dirty TQuestionDb instance");
		try {
			getHibernateTemplate().saveOrUpdate(instance);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	@Override
	public List findByHql(String hql) {
		return getHibernateTemplate().find(hql);
	}
}